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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2425479Generated: October 28, 2026

Ethyl Acetate → 5-[3-[(1S)-2-(Difluoromethoxy)-1-methylethoxy]-5-[[(5-methyl-2-pyrazinyl)amino]carbonyl]phenoxy]-N,N-dimethyl-2-pyrazinecarboxamide

https://huagongshe.com/reaction/2425479

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetateHCID 8857—
ReactantPotassium CarbonateHCID 11430—
Reactant5-chloro-N,N-dimethylpyrazine-2-carboxamideHCID 59000470—
ReactantHCID 59205104HCID 59205104—
SolventAcetonitrileHCID 6342—
Product5-[3-[(1S)-2-(Difluoromethoxy)-1-methylethoxy]-5-[[(5-methyl-2-pyrazinyl)amino]carbonyl]phenoxy]-N,N-dimethyl-2-pyrazinecarboxamideHCID 2509625355.3%

Reaction Conditions

Temperature140 °C

Reaction Steps

A mixture of 3-[(2S)-1-(difluoromethoxy)propan-2-yl]oxy-5-hydroxy-N-(5-methylpyrazin-2-yl)benzamide (0.19 g, 0.54 mmol), 5-chloro-N,N-dimethyl-pyrazine-2-carboxamide (100 mg, 0.54 mmol) and potassium carbonate (149 mg, 1.08 mmol) in acetonitrile (5 mL) was stirred in a microwave reactor at 140° C. for 5 hours and the mixture reduced in vacuo. Ethyl acetate (50 mL) was added and the mixture washed with water (50 mL), brine (50 mL), dried (MgSO4), and reduced in vacuo. The crude residue was chromatographed on silica, eluting with 0-5% methanol in DCM, to give the desired compound (150 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07964725B2
Source datasetuspto-grants-2011_06
ORD IDord-9fc922de47f345a5848291c037868938
Source noteuspto-grants-2011_06